131211442 has 8 divisors (see below), whose sum is σ = 196906032. Its totient is φ = 65576100.

The previous prime is 131211433. The next prime is 131211467. The reversal of 131211442 is 244112131.

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8784 + ... + 18427.

It is an arithmetic number, because the mean of its divisors is an integer number (24613254).

Almost surely, 2^131211442 is an apocalyptic number.

131211442 is a deficient number, since it is larger than the sum of its proper divisors (65694590).

131211442 is a wasteful number, since it uses less digits than its factorization.

131211442 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29624.

The product of its digits is 192, while the sum is 19.

The square root of 131211442 is about 11454.7563046972. The cubic root of 131211442 is about 508.1484081864.

Adding to 131211442 its reverse (244112131), we get a palindrome (375323573).

The spelling of 131211442 in words is "one hundred thirty-one million, two hundred eleven thousand, four hundred forty-two".